Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/hfsplus/inode.c | |
3 | * | |
4 | * Copyright (C) 2001 | |
5 | * Brad Boyer (flar@allandria.com) | |
6 | * (C) 2003 Ardis Technologies <roman@ardistech.com> | |
7 | * | |
8 | * Inode handling routines | |
9 | */ | |
10 | ||
34a2d313 | 11 | #include <linux/blkdev.h> |
1da177e4 LT |
12 | #include <linux/mm.h> |
13 | #include <linux/fs.h> | |
14 | #include <linux/pagemap.h> | |
1da177e4 | 15 | #include <linux/mpage.h> |
e8edc6e0 | 16 | #include <linux/sched.h> |
1da177e4 LT |
17 | |
18 | #include "hfsplus_fs.h" | |
19 | #include "hfsplus_raw.h" | |
20 | ||
21 | static int hfsplus_readpage(struct file *file, struct page *page) | |
22 | { | |
1da177e4 LT |
23 | return block_read_full_page(page, hfsplus_get_block); |
24 | } | |
25 | ||
26 | static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) | |
27 | { | |
1da177e4 LT |
28 | return block_write_full_page(page, hfsplus_get_block, wbc); |
29 | } | |
30 | ||
7c0efc62 NP |
31 | static int hfsplus_write_begin(struct file *file, struct address_space *mapping, |
32 | loff_t pos, unsigned len, unsigned flags, | |
33 | struct page **pagep, void **fsdata) | |
1da177e4 | 34 | { |
282dc178 CH |
35 | int ret; |
36 | ||
7c0efc62 | 37 | *pagep = NULL; |
282dc178 | 38 | ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, |
7c0efc62 | 39 | hfsplus_get_block, |
6af502de | 40 | &HFSPLUS_I(mapping->host)->phys_size); |
282dc178 CH |
41 | if (unlikely(ret)) { |
42 | loff_t isize = mapping->host->i_size; | |
43 | if (pos + len > isize) | |
44 | vmtruncate(mapping->host, isize); | |
45 | } | |
46 | ||
47 | return ret; | |
1da177e4 LT |
48 | } |
49 | ||
50 | static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) | |
51 | { | |
52 | return generic_block_bmap(mapping, block, hfsplus_get_block); | |
53 | } | |
54 | ||
27496a8c | 55 | static int hfsplus_releasepage(struct page *page, gfp_t mask) |
1da177e4 LT |
56 | { |
57 | struct inode *inode = page->mapping->host; | |
58 | struct super_block *sb = inode->i_sb; | |
59 | struct hfs_btree *tree; | |
60 | struct hfs_bnode *node; | |
61 | u32 nidx; | |
62 | int i, res = 1; | |
63 | ||
64 | switch (inode->i_ino) { | |
65 | case HFSPLUS_EXT_CNID: | |
dd73a01a | 66 | tree = HFSPLUS_SB(sb)->ext_tree; |
1da177e4 LT |
67 | break; |
68 | case HFSPLUS_CAT_CNID: | |
dd73a01a | 69 | tree = HFSPLUS_SB(sb)->cat_tree; |
1da177e4 LT |
70 | break; |
71 | case HFSPLUS_ATTR_CNID: | |
dd73a01a | 72 | tree = HFSPLUS_SB(sb)->attr_tree; |
1da177e4 LT |
73 | break; |
74 | default: | |
75 | BUG(); | |
76 | return 0; | |
77 | } | |
70632249 ES |
78 | if (!tree) |
79 | return 0; | |
1da177e4 | 80 | if (tree->node_size >= PAGE_CACHE_SIZE) { |
2753cc28 AS |
81 | nidx = page->index >> |
82 | (tree->node_size_shift - PAGE_CACHE_SHIFT); | |
1da177e4 LT |
83 | spin_lock(&tree->hash_lock); |
84 | node = hfs_bnode_findhash(tree, nidx); | |
85 | if (!node) | |
86 | ; | |
87 | else if (atomic_read(&node->refcnt)) | |
88 | res = 0; | |
89 | if (res && node) { | |
90 | hfs_bnode_unhash(node); | |
91 | hfs_bnode_free(node); | |
92 | } | |
93 | spin_unlock(&tree->hash_lock); | |
94 | } else { | |
2753cc28 AS |
95 | nidx = page->index << |
96 | (PAGE_CACHE_SHIFT - tree->node_size_shift); | |
1da177e4 LT |
97 | i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); |
98 | spin_lock(&tree->hash_lock); | |
99 | do { | |
100 | node = hfs_bnode_findhash(tree, nidx++); | |
101 | if (!node) | |
102 | continue; | |
103 | if (atomic_read(&node->refcnt)) { | |
104 | res = 0; | |
105 | break; | |
106 | } | |
107 | hfs_bnode_unhash(node); | |
108 | hfs_bnode_free(node); | |
109 | } while (--i && nidx < tree->node_count); | |
110 | spin_unlock(&tree->hash_lock); | |
111 | } | |
1da177e4 LT |
112 | return res ? try_to_free_buffers(page) : 0; |
113 | } | |
114 | ||
1da177e4 LT |
115 | static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, |
116 | const struct iovec *iov, loff_t offset, unsigned long nr_segs) | |
117 | { | |
118 | struct file *file = iocb->ki_filp; | |
f44ea031 | 119 | struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; |
eafdc7d1 | 120 | ssize_t ret; |
1da177e4 | 121 | |
aacfc19c CH |
122 | ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, |
123 | hfsplus_get_block); | |
eafdc7d1 CH |
124 | |
125 | /* | |
126 | * In case of error extending write may have instantiated a few | |
127 | * blocks outside i_size. Trim these off again. | |
128 | */ | |
129 | if (unlikely((rw & WRITE) && ret < 0)) { | |
130 | loff_t isize = i_size_read(inode); | |
131 | loff_t end = offset + iov_length(iov, nr_segs); | |
132 | ||
133 | if (end > isize) | |
134 | vmtruncate(inode, isize); | |
135 | } | |
136 | ||
137 | return ret; | |
1da177e4 LT |
138 | } |
139 | ||
140 | static int hfsplus_writepages(struct address_space *mapping, | |
141 | struct writeback_control *wbc) | |
142 | { | |
143 | return mpage_writepages(mapping, wbc, hfsplus_get_block); | |
144 | } | |
145 | ||
f5e54d6e | 146 | const struct address_space_operations hfsplus_btree_aops = { |
1da177e4 LT |
147 | .readpage = hfsplus_readpage, |
148 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
149 | .write_begin = hfsplus_write_begin, |
150 | .write_end = generic_write_end, | |
1da177e4 LT |
151 | .bmap = hfsplus_bmap, |
152 | .releasepage = hfsplus_releasepage, | |
153 | }; | |
154 | ||
f5e54d6e | 155 | const struct address_space_operations hfsplus_aops = { |
1da177e4 LT |
156 | .readpage = hfsplus_readpage, |
157 | .writepage = hfsplus_writepage, | |
7c0efc62 NP |
158 | .write_begin = hfsplus_write_begin, |
159 | .write_end = generic_write_end, | |
1da177e4 LT |
160 | .bmap = hfsplus_bmap, |
161 | .direct_IO = hfsplus_direct_IO, | |
162 | .writepages = hfsplus_writepages, | |
163 | }; | |
164 | ||
e16404ed | 165 | const struct dentry_operations hfsplus_dentry_operations = { |
d45bce8f DG |
166 | .d_hash = hfsplus_hash_dentry, |
167 | .d_compare = hfsplus_compare_dentry, | |
168 | }; | |
169 | ||
2753cc28 AS |
170 | static struct dentry *hfsplus_file_lookup(struct inode *dir, |
171 | struct dentry *dentry, struct nameidata *nd) | |
1da177e4 LT |
172 | { |
173 | struct hfs_find_data fd; | |
174 | struct super_block *sb = dir->i_sb; | |
175 | struct inode *inode = NULL; | |
6af502de | 176 | struct hfsplus_inode_info *hip; |
1da177e4 LT |
177 | int err; |
178 | ||
179 | if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) | |
180 | goto out; | |
181 | ||
6af502de | 182 | inode = HFSPLUS_I(dir)->rsrc_inode; |
1da177e4 LT |
183 | if (inode) |
184 | goto out; | |
185 | ||
186 | inode = new_inode(sb); | |
187 | if (!inode) | |
188 | return ERR_PTR(-ENOMEM); | |
189 | ||
6af502de | 190 | hip = HFSPLUS_I(inode); |
1da177e4 | 191 | inode->i_ino = dir->i_ino; |
6af502de CH |
192 | INIT_LIST_HEAD(&hip->open_dir_list); |
193 | mutex_init(&hip->extents_lock); | |
b33b7921 CH |
194 | hip->extent_state = 0; |
195 | hip->flags = 0; | |
196 | set_bit(HFSPLUS_I_RSRC, &hip->flags); | |
1da177e4 | 197 | |
5bd9d99d AK |
198 | err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); |
199 | if (!err) { | |
200 | err = hfsplus_find_cat(sb, dir->i_ino, &fd); | |
201 | if (!err) | |
202 | err = hfsplus_cat_read_inode(inode, &fd); | |
203 | hfs_find_exit(&fd); | |
204 | } | |
1da177e4 LT |
205 | if (err) { |
206 | iput(inode); | |
207 | return ERR_PTR(err); | |
208 | } | |
6af502de CH |
209 | hip->rsrc_inode = dir; |
210 | HFSPLUS_I(dir)->rsrc_inode = inode; | |
1da177e4 | 211 | igrab(dir); |
58a818f5 CH |
212 | |
213 | /* | |
214 | * __mark_inode_dirty expects inodes to be hashed. Since we don't | |
215 | * want resource fork inodes in the regular inode space, we make them | |
216 | * appear hashed, but do not put on any lists. hlist_del() | |
217 | * will work fine and require no locking. | |
218 | */ | |
756acc2d | 219 | hlist_add_fake(&inode->i_hash); |
58a818f5 | 220 | |
1da177e4 | 221 | mark_inode_dirty(inode); |
1da177e4 LT |
222 | out: |
223 | d_add(dentry, inode); | |
224 | return NULL; | |
225 | } | |
226 | ||
2753cc28 AS |
227 | static void hfsplus_get_perms(struct inode *inode, |
228 | struct hfsplus_perm *perms, int dir) | |
1da177e4 | 229 | { |
dd73a01a | 230 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
1da177e4 LT |
231 | u16 mode; |
232 | ||
233 | mode = be16_to_cpu(perms->mode); | |
234 | ||
235 | inode->i_uid = be32_to_cpu(perms->owner); | |
236 | if (!inode->i_uid && !mode) | |
dd73a01a | 237 | inode->i_uid = sbi->uid; |
1da177e4 LT |
238 | |
239 | inode->i_gid = be32_to_cpu(perms->group); | |
240 | if (!inode->i_gid && !mode) | |
dd73a01a | 241 | inode->i_gid = sbi->gid; |
1da177e4 LT |
242 | |
243 | if (dir) { | |
dd73a01a | 244 | mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); |
1da177e4 LT |
245 | mode |= S_IFDIR; |
246 | } else if (!mode) | |
dd73a01a | 247 | mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); |
1da177e4 LT |
248 | inode->i_mode = mode; |
249 | ||
6af502de | 250 | HFSPLUS_I(inode)->userflags = perms->userflags; |
1da177e4 LT |
251 | if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) |
252 | inode->i_flags |= S_IMMUTABLE; | |
253 | else | |
254 | inode->i_flags &= ~S_IMMUTABLE; | |
255 | if (perms->rootflags & HFSPLUS_FLG_APPEND) | |
256 | inode->i_flags |= S_APPEND; | |
257 | else | |
258 | inode->i_flags &= ~S_APPEND; | |
259 | } | |
260 | ||
1da177e4 LT |
261 | static int hfsplus_file_open(struct inode *inode, struct file *file) |
262 | { | |
263 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 264 | inode = HFSPLUS_I(inode)->rsrc_inode; |
6e715294 AC |
265 | if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
266 | return -EOVERFLOW; | |
6af502de | 267 | atomic_inc(&HFSPLUS_I(inode)->opencnt); |
1da177e4 LT |
268 | return 0; |
269 | } | |
270 | ||
271 | static int hfsplus_file_release(struct inode *inode, struct file *file) | |
272 | { | |
273 | struct super_block *sb = inode->i_sb; | |
274 | ||
275 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de CH |
276 | inode = HFSPLUS_I(inode)->rsrc_inode; |
277 | if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { | |
1b1dcc1b | 278 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
279 | hfsplus_file_truncate(inode); |
280 | if (inode->i_flags & S_DEAD) { | |
dd73a01a CH |
281 | hfsplus_delete_cat(inode->i_ino, |
282 | HFSPLUS_SB(sb)->hidden_dir, NULL); | |
1da177e4 LT |
283 | hfsplus_delete_inode(inode); |
284 | } | |
1b1dcc1b | 285 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
286 | } |
287 | return 0; | |
288 | } | |
289 | ||
d39aae9e CH |
290 | static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) |
291 | { | |
292 | struct inode *inode = dentry->d_inode; | |
293 | int error; | |
294 | ||
295 | error = inode_change_ok(inode, attr); | |
296 | if (error) | |
297 | return error; | |
1025774c CH |
298 | |
299 | if ((attr->ia_valid & ATTR_SIZE) && | |
300 | attr->ia_size != i_size_read(inode)) { | |
562c72aa CH |
301 | inode_dio_wait(inode); |
302 | ||
1025774c CH |
303 | error = vmtruncate(inode, attr->ia_size); |
304 | if (error) | |
305 | return error; | |
306 | } | |
307 | ||
308 | setattr_copy(inode, attr); | |
309 | mark_inode_dirty(inode); | |
310 | return 0; | |
d39aae9e CH |
311 | } |
312 | ||
02c24a82 JB |
313 | int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, |
314 | int datasync) | |
b5fc510c | 315 | { |
28146976 | 316 | struct inode *inode = file->f_mapping->host; |
e3494705 | 317 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
28146976 | 318 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); |
e3494705 | 319 | int error = 0, error2; |
b5fc510c | 320 | |
02c24a82 JB |
321 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
322 | if (error) | |
323 | return error; | |
324 | mutex_lock(&inode->i_mutex); | |
325 | ||
28146976 CH |
326 | /* |
327 | * Sync inode metadata into the catalog and extent trees. | |
328 | */ | |
329 | sync_inode_metadata(inode, 1); | |
330 | ||
331 | /* | |
332 | * And explicitly write out the btrees. | |
333 | */ | |
e3494705 CH |
334 | if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) |
335 | error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); | |
336 | ||
337 | if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { | |
2753cc28 AS |
338 | error2 = |
339 | filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); | |
e3494705 CH |
340 | if (!error) |
341 | error = error2; | |
342 | } | |
343 | ||
344 | if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { | |
345 | error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); | |
346 | if (!error) | |
347 | error = error2; | |
348 | } | |
349 | ||
34a2d313 CH |
350 | if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) |
351 | blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); | |
352 | ||
02c24a82 JB |
353 | mutex_unlock(&inode->i_mutex); |
354 | ||
28146976 | 355 | return error; |
b5fc510c AV |
356 | } |
357 | ||
92e1d5be | 358 | static const struct inode_operations hfsplus_file_inode_operations = { |
1da177e4 LT |
359 | .lookup = hfsplus_file_lookup, |
360 | .truncate = hfsplus_file_truncate, | |
d39aae9e | 361 | .setattr = hfsplus_setattr, |
1da177e4 LT |
362 | .setxattr = hfsplus_setxattr, |
363 | .getxattr = hfsplus_getxattr, | |
364 | .listxattr = hfsplus_listxattr, | |
365 | }; | |
366 | ||
4b6f5d20 | 367 | static const struct file_operations hfsplus_file_operations = { |
20b7643d | 368 | .llseek = generic_file_llseek, |
543ade1f BP |
369 | .read = do_sync_read, |
370 | .aio_read = generic_file_aio_read, | |
371 | .write = do_sync_write, | |
372 | .aio_write = generic_file_aio_write, | |
1da177e4 | 373 | .mmap = generic_file_mmap, |
5ffc4ef4 | 374 | .splice_read = generic_file_splice_read, |
b5fc510c | 375 | .fsync = hfsplus_file_fsync, |
1da177e4 LT |
376 | .open = hfsplus_file_open, |
377 | .release = hfsplus_file_release, | |
7cc4bcc6 | 378 | .unlocked_ioctl = hfsplus_ioctl, |
1da177e4 LT |
379 | }; |
380 | ||
381 | struct inode *hfsplus_new_inode(struct super_block *sb, int mode) | |
382 | { | |
dd73a01a | 383 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
1da177e4 | 384 | struct inode *inode = new_inode(sb); |
6af502de | 385 | struct hfsplus_inode_info *hip; |
dd73a01a | 386 | |
1da177e4 LT |
387 | if (!inode) |
388 | return NULL; | |
389 | ||
dd73a01a | 390 | inode->i_ino = sbi->next_cnid++; |
1da177e4 | 391 | inode->i_mode = mode; |
4ac8489a DH |
392 | inode->i_uid = current_fsuid(); |
393 | inode->i_gid = current_fsgid(); | |
bfe86848 | 394 | set_nlink(inode, 1); |
1da177e4 | 395 | inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; |
6af502de CH |
396 | |
397 | hip = HFSPLUS_I(inode); | |
398 | INIT_LIST_HEAD(&hip->open_dir_list); | |
399 | mutex_init(&hip->extents_lock); | |
400 | atomic_set(&hip->opencnt, 0); | |
b33b7921 | 401 | hip->extent_state = 0; |
6af502de CH |
402 | hip->flags = 0; |
403 | memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); | |
404 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
405 | hip->alloc_blocks = 0; | |
406 | hip->first_blocks = 0; | |
407 | hip->cached_start = 0; | |
408 | hip->cached_blocks = 0; | |
409 | hip->phys_size = 0; | |
410 | hip->fs_blocks = 0; | |
411 | hip->rsrc_inode = NULL; | |
1da177e4 LT |
412 | if (S_ISDIR(inode->i_mode)) { |
413 | inode->i_size = 2; | |
dd73a01a | 414 | sbi->folder_count++; |
1da177e4 LT |
415 | inode->i_op = &hfsplus_dir_inode_operations; |
416 | inode->i_fop = &hfsplus_dir_operations; | |
417 | } else if (S_ISREG(inode->i_mode)) { | |
dd73a01a | 418 | sbi->file_count++; |
1da177e4 LT |
419 | inode->i_op = &hfsplus_file_inode_operations; |
420 | inode->i_fop = &hfsplus_file_operations; | |
421 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 422 | hip->clump_blocks = sbi->data_clump_blocks; |
1da177e4 | 423 | } else if (S_ISLNK(inode->i_mode)) { |
dd73a01a | 424 | sbi->file_count++; |
1da177e4 LT |
425 | inode->i_op = &page_symlink_inode_operations; |
426 | inode->i_mapping->a_ops = &hfsplus_aops; | |
6af502de | 427 | hip->clump_blocks = 1; |
1da177e4 | 428 | } else |
dd73a01a | 429 | sbi->file_count++; |
1da177e4 LT |
430 | insert_inode_hash(inode); |
431 | mark_inode_dirty(inode); | |
432 | sb->s_dirt = 1; | |
433 | ||
434 | return inode; | |
435 | } | |
436 | ||
437 | void hfsplus_delete_inode(struct inode *inode) | |
438 | { | |
439 | struct super_block *sb = inode->i_sb; | |
440 | ||
441 | if (S_ISDIR(inode->i_mode)) { | |
dd73a01a | 442 | HFSPLUS_SB(sb)->folder_count--; |
1da177e4 LT |
443 | sb->s_dirt = 1; |
444 | return; | |
445 | } | |
dd73a01a | 446 | HFSPLUS_SB(sb)->file_count--; |
1da177e4 LT |
447 | if (S_ISREG(inode->i_mode)) { |
448 | if (!inode->i_nlink) { | |
449 | inode->i_size = 0; | |
450 | hfsplus_file_truncate(inode); | |
451 | } | |
452 | } else if (S_ISLNK(inode->i_mode)) { | |
453 | inode->i_size = 0; | |
454 | hfsplus_file_truncate(inode); | |
455 | } | |
456 | sb->s_dirt = 1; | |
457 | } | |
458 | ||
459 | void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) | |
460 | { | |
461 | struct super_block *sb = inode->i_sb; | |
dd73a01a | 462 | struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); |
6af502de | 463 | struct hfsplus_inode_info *hip = HFSPLUS_I(inode); |
1da177e4 LT |
464 | u32 count; |
465 | int i; | |
466 | ||
6af502de | 467 | memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); |
1da177e4 LT |
468 | for (count = 0, i = 0; i < 8; i++) |
469 | count += be32_to_cpu(fork->extents[i].block_count); | |
6af502de CH |
470 | hip->first_blocks = count; |
471 | memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); | |
472 | hip->cached_start = 0; | |
473 | hip->cached_blocks = 0; | |
474 | ||
475 | hip->alloc_blocks = be32_to_cpu(fork->total_blocks); | |
476 | hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); | |
477 | hip->fs_blocks = | |
478 | (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
479 | inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); | |
480 | hip->clump_blocks = | |
dd73a01a | 481 | be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; |
6af502de CH |
482 | if (!hip->clump_blocks) { |
483 | hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? | |
dd73a01a CH |
484 | sbi->rsrc_clump_blocks : |
485 | sbi->data_clump_blocks; | |
486 | } | |
1da177e4 LT |
487 | } |
488 | ||
2753cc28 AS |
489 | void hfsplus_inode_write_fork(struct inode *inode, |
490 | struct hfsplus_fork_raw *fork) | |
1da177e4 | 491 | { |
6af502de | 492 | memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, |
1da177e4 LT |
493 | sizeof(hfsplus_extent_rec)); |
494 | fork->total_size = cpu_to_be64(inode->i_size); | |
6af502de | 495 | fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); |
1da177e4 LT |
496 | } |
497 | ||
498 | int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) | |
499 | { | |
500 | hfsplus_cat_entry entry; | |
501 | int res = 0; | |
502 | u16 type; | |
503 | ||
504 | type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); | |
505 | ||
f6089ff8 | 506 | HFSPLUS_I(inode)->linkid = 0; |
1da177e4 LT |
507 | if (type == HFSPLUS_FOLDER) { |
508 | struct hfsplus_cat_folder *folder = &entry.folder; | |
509 | ||
510 | if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) | |
511 | /* panic? */; | |
512 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
513 | sizeof(struct hfsplus_cat_folder)); | |
514 | hfsplus_get_perms(inode, &folder->permissions, 1); | |
bfe86848 | 515 | set_nlink(inode, 1); |
1da177e4 LT |
516 | inode->i_size = 2 + be32_to_cpu(folder->valence); |
517 | inode->i_atime = hfsp_mt2ut(folder->access_date); | |
518 | inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); | |
9a4cad95 | 519 | inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); |
6af502de CH |
520 | HFSPLUS_I(inode)->create_date = folder->create_date; |
521 | HFSPLUS_I(inode)->fs_blocks = 0; | |
1da177e4 LT |
522 | inode->i_op = &hfsplus_dir_inode_operations; |
523 | inode->i_fop = &hfsplus_dir_operations; | |
524 | } else if (type == HFSPLUS_FILE) { | |
525 | struct hfsplus_cat_file *file = &entry.file; | |
526 | ||
527 | if (fd->entrylength < sizeof(struct hfsplus_cat_file)) | |
528 | /* panic? */; | |
529 | hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, | |
530 | sizeof(struct hfsplus_cat_file)); | |
531 | ||
b33b7921 CH |
532 | hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? |
533 | &file->rsrc_fork : &file->data_fork); | |
1da177e4 | 534 | hfsplus_get_perms(inode, &file->permissions, 0); |
bfe86848 | 535 | set_nlink(inode, 1); |
1da177e4 LT |
536 | if (S_ISREG(inode->i_mode)) { |
537 | if (file->permissions.dev) | |
bfe86848 MS |
538 | set_nlink(inode, |
539 | be32_to_cpu(file->permissions.dev)); | |
1da177e4 LT |
540 | inode->i_op = &hfsplus_file_inode_operations; |
541 | inode->i_fop = &hfsplus_file_operations; | |
542 | inode->i_mapping->a_ops = &hfsplus_aops; | |
543 | } else if (S_ISLNK(inode->i_mode)) { | |
544 | inode->i_op = &page_symlink_inode_operations; | |
545 | inode->i_mapping->a_ops = &hfsplus_aops; | |
546 | } else { | |
547 | init_special_inode(inode, inode->i_mode, | |
548 | be32_to_cpu(file->permissions.dev)); | |
549 | } | |
550 | inode->i_atime = hfsp_mt2ut(file->access_date); | |
551 | inode->i_mtime = hfsp_mt2ut(file->content_mod_date); | |
9a4cad95 | 552 | inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); |
6af502de | 553 | HFSPLUS_I(inode)->create_date = file->create_date; |
1da177e4 | 554 | } else { |
634725a9 | 555 | printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); |
1da177e4 LT |
556 | res = -EIO; |
557 | } | |
558 | return res; | |
559 | } | |
560 | ||
561 | int hfsplus_cat_write_inode(struct inode *inode) | |
562 | { | |
563 | struct inode *main_inode = inode; | |
564 | struct hfs_find_data fd; | |
565 | hfsplus_cat_entry entry; | |
566 | ||
567 | if (HFSPLUS_IS_RSRC(inode)) | |
6af502de | 568 | main_inode = HFSPLUS_I(inode)->rsrc_inode; |
1da177e4 LT |
569 | |
570 | if (!main_inode->i_nlink) | |
571 | return 0; | |
572 | ||
dd73a01a | 573 | if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) |
1da177e4 LT |
574 | /* panic? */ |
575 | return -EIO; | |
576 | ||
577 | if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) | |
578 | /* panic? */ | |
579 | goto out; | |
580 | ||
581 | if (S_ISDIR(main_inode->i_mode)) { | |
582 | struct hfsplus_cat_folder *folder = &entry.folder; | |
583 | ||
584 | if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) | |
585 | /* panic? */; | |
586 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
587 | sizeof(struct hfsplus_cat_folder)); | |
588 | /* simple node checks? */ | |
90e61690 | 589 | hfsplus_cat_set_perms(inode, &folder->permissions); |
1da177e4 LT |
590 | folder->access_date = hfsp_ut2mt(inode->i_atime); |
591 | folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
592 | folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
593 | folder->valence = cpu_to_be32(inode->i_size - 2); | |
594 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
595 | sizeof(struct hfsplus_cat_folder)); | |
596 | } else if (HFSPLUS_IS_RSRC(inode)) { | |
597 | struct hfsplus_cat_file *file = &entry.file; | |
598 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
599 | sizeof(struct hfsplus_cat_file)); | |
600 | hfsplus_inode_write_fork(inode, &file->rsrc_fork); | |
601 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
602 | sizeof(struct hfsplus_cat_file)); | |
603 | } else { | |
604 | struct hfsplus_cat_file *file = &entry.file; | |
605 | ||
606 | if (fd.entrylength < sizeof(struct hfsplus_cat_file)) | |
607 | /* panic? */; | |
608 | hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, | |
609 | sizeof(struct hfsplus_cat_file)); | |
610 | hfsplus_inode_write_fork(inode, &file->data_fork); | |
90e61690 | 611 | hfsplus_cat_set_perms(inode, &file->permissions); |
2753cc28 AS |
612 | if (HFSPLUS_FLG_IMMUTABLE & |
613 | (file->permissions.rootflags | | |
614 | file->permissions.userflags)) | |
1da177e4 LT |
615 | file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); |
616 | else | |
617 | file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); | |
618 | file->access_date = hfsp_ut2mt(inode->i_atime); | |
619 | file->content_mod_date = hfsp_ut2mt(inode->i_mtime); | |
620 | file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); | |
621 | hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, | |
622 | sizeof(struct hfsplus_cat_file)); | |
623 | } | |
e3494705 CH |
624 | |
625 | set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); | |
1da177e4 LT |
626 | out: |
627 | hfs_find_exit(&fd); | |
628 | return 0; | |
629 | } |